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Finding the Fourth Proportional to 440.78, 607.91 and 336.45

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Solution

The fourth proportional to 440.78, 607.91 and 336.45 is: 464.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.78 : 607.91 = 336.45 : x
  2. Step 2: Convert to fraction form
    440.78/607.91 = 336.45/x
  3. Step 3: Cross multiply
    440.78x = 607.91 × 336.45
  4. Step 4: Simplify right side
    440.78x = 204,531.92
  5. Step 5: Solve for x
    x = 204,531.92/440.78
  6. Step 6: Final answer
    x = 464.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.